USB-422-485-IND Rugged, Industrial Strength USB to RS-422/485 port, Extended Temperature
FEATURES • RoHS compliant, single-port serial communications adapter for USB 2.0 or 3.0 • Supports full-duplex RS-422/485 protocol • Supports 4-wire RS-485 protocol • Includes type FT232R UART with 128-byte receive/256-byte transmit FIFO buffers • Speeds up to 3Mbps asynchronous • Supports 7 or 8 data bits, 1 or 2 stop bits, and odd / even / mark / space / no parity • ±15kV ESD Protection (IEC 6100) on 422/485 signals • All required power drawn from host USB port, no external power adapter required • Compact, industrial, metal backshell • Operating temperature of -40˚ to +85˚C • Supported for use in Windows CE
FACTORY OPTION • -Term RC Termination
APPLICATIONS • Scales • Data entry terminals • Data acquisition and automation modules • Transportation
FUNCTIONAL DESCRIPTION
The USB-422-485-IND is a rugged industrial serial communications adapter designed for use in demanding real- world applications such as transportation, military embedded control systems, remote data acquisition, mobile, and more. This intelligent module provides a cost-effective solution for transferring high-speed asynchronous serial data over USB. The adapter provides easy connectivity between the computer and standard communication ports or remote serial devices. No PC reconfiguration, assignment of IRQs, or jumper settings required. The adapter will be recognized as a USB to Serial Adapter and install in the system as a standard COM port.
This model has RX always enabled and TX is tri-stated and should be used only as a 4-wire slave. If used for 2-wire 485 the connector must be jumpered and RX will get the TX echo. If used for 422 or a 4-wire master the TX is tri- stated and requires advanced users with the expert knowledge of both TX and RX wire pair's idle 1 bias level during tri-state.
ACCESSORIES
The module is available with an optional screw terminal adapter board model ADAP9 to break out signals for ease of connection.
SOFTWARE
The USB-422-485-IND is a plug-and-play device using the built in OS drivers which allows quick connect or disconnect without having to fumble with locating driver media whenever you need an RS-422/485 port. The USB- 422/485-IND is supported for use in most USB supported operating systems and includes a free Linux and Windows compatible software package. The software package includes sample programs and source code in C#, Delphi, Visual Basic, and Visual C++ for Windows.
10623 Roselle Street, San Diego, CA 92121 • (858) 550-9559 • Fax (858) 550-7322 • [email protected] • www.accesio.com October 12th 2020
SPECIFICATIONS
Communications Interface Serial Port: RS-422/485 Connector: DB-9 Male Character Length: 7 or 8 bits Parity: Even, odd, mark, space or none Stop Interval: 1 or 2 bits Serial Data Rates: 300bps up to 3Mbps asynchronous Input/Output Voltage: ±14V Receiver Input Sensitivity: ±200mV Termination: 120Ω w/0.01µF capacitor (Factory Option) Bias: Transceiver and Receiver via 10kΩ ESD Protection: ±15kV on all signal pins
Bus Type USB 2.0 Full-Speed USB 3.0 Compatible
Environmental Operating Temp: -40° to +85°C Storage Temp: -65° to +150°C BLOCK DIAGRAM Humidity: 5% to 95%, non-condensing Power Required: 5VDC at ~11mA with no load Cable Length: 6 feet Backshell Dimensions: 1.236” x 0.657” x 2.094” (31.4mm x 16.7mm x 53.2mm)
Ordering Guide USB-422-485-IND USB to RS-422/485 industrial serial adapter USB-422-485-IND-TERM As above, including termination
PIN DB9M 1 -RX 2 +TX 3 -TX 4 5 GND 6
7 8 9 +RX Pinout Table
Backshell Drawing
10623 Roselle Street, San Diego, CA 92121 • (858) 550-9559 • Fax (858) 550-7322 • [email protected] • www.accesio.com October 12th 2020